MATLAB Answers

Index in position 1 is invalid. Array indices must be positive integers or logical values.

12 views (last 30 days)
Hey all,
Long story short, I need to flip my data/reassign the w data to new indices on the y axis and got the indices 394,530. However I am trying to extract the data from ReSHEARLAYERandWAKE2(1).uxux.w (a structured data set containing some w values - say reynolds stresses for each x and y position)
from specific x and y ranges, and yet everytime i am shown an error "Index in position 1 is invalid. Array indices must be positive integers or logical values."
ww = ReSHEARLAYERandWAKE2(1).uxux.w;
wwmirror = ww;
for i = 0:366
for j = 394:530
wwmirror(i,1080 - (j - 394)) = ww(i,j)
end
end

Accepted Answer

Bhaskar R
Bhaskar R on 11 Mar 2020
Edited: Bhaskar R on 11 Mar 2020
Index of the array start from 1 and it must be positive integer in MATLAB.
In your code for loop i = 0:366 starting from 0 that means ww(i,j) iterates as w(0, 394) so on.. It is invalid in MATLAB indexing
so change the logic so that in satisfies "Index of the array start from 1 and it must be positive integer in MATLAB."
For more details
  1 Comment
yashvini shukla
yashvini shukla on 11 Mar 2020
Thanks a lot!! That worked. I am triying to use the showf function, and it works
>> showf(ReSHEARLAYERandWAKE2(1).mean(223:400,100:500))
Index in position 1 exceeds array bounds (must not exceed 1).
not sure how to show only specific parts in the data.
thankss

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!